Adjusting device



INVENTOR. Y fwufz. n4 /fr/r.

BY A' ATTORNEYS.

Aug. 2, 1927.

s. w, HYATT ADJUSTING DEVICE Filed Feb, 2, 1926 f y'lhisinvention pertains to yan adjusting mechanism for obtaining vertical adjustment of a movable structure with respect toa fixedy structure, and is particularly adaptable [to 5 focusing bulbs in headlights. ,n

PatentedAag. 2, 1927'.L l fj k UNITED ,STATES` fsAMUnL W.

,l 1,637,417l PATENT@ HYATT, OF'KCONNERSVILLE, INDIANA, ASSIGNOR T0 INDIANA LAMP OOR- FFICE.-

PORATION, OF' CONNERSVILLKE,VINDIANA, A CORPORATION.

Application yled February 2 The yprincipal :feature of the invention resides in a rotatable member, such as a disk, whichl is provided with a slot ot' camdike curvature, the rotatable member being piv-l otally mounted to a yfixed support such as the back plate of a lamp casing,'to be connected with a screw or suitable member of that character for rotating thesame. yThe object to bey adjustechsuch as the mounting for the lamp bulb, is connected with amember extending through a verti cal slot in the casing so as to `limit it to a given movement, and

bola shape7 which may be divided into sec-y tions so as to permit the treatment'of light f from the reflector to be aimed or varied by means of the adjustment so as to obtainthe prescribed lighting effectifk n, n n

The full nature of the invention will be yunderstood from the accompanying drawings and theftdllowing description and claims: f y'Inthe'drawings, Figure 1gis a cross section f taken through the lamp structure illustrating f one fornrofthe invention.L vFig. 2 isa plan y.view thereof takenk from thereary of the casing. ig.1.3 is the same. as Fig. 1, showing'a modifiedtform; Fig. 4 is the same as Fig. 2,

- showing a modified; form 'of the structure Asli/owning` Fig; e .Figc the lineof' Fig., 3'. j y f n In the drawings there is shown a lamp casn ,ing-'i150 in ,which there i'sfixedly mounted a j reflector 11h-ailing ay lampsocket 12 slidablyy mounted therein for supporting a lamp bulb 0.13 at substantiallythe `focal point of the reflectoi"'."\'l`.lie socket 12 is providedwithL a "bracket y14 secured rigidly thereto and longiif ytudinal'ly of the periphery. The socketis so r "mountedin .the reflector as to tilt thereiuvas 1- ,j 5"* well n as* freely slide longitudinally thereof,

y.the usual character .the bulb 13 maybe positioned tothe front `onrean of ,theyertical focal plane. the other hand, by turning'thev head 210i the stud 2O,y the adjusting disk will be rotated .so as to jraiseo'r lower l,the screw bolt ,16 by reason of the action with respect thereto of.y ftheeamflikeslot 26.- This has the effect of tilting the source of lightA downwardly bealsection taken on ADJUs'rING DEVICE.

2, i926.. serial No. 85,580.

but prevented yfrom rotation by `reason of the engagement ofthe bracket 14 with a cutfree end yof the bracket, to the rear of the socket, ris provided with screw threads into which a screw bolt 16 is adapted to screw, said bolt having its ends split at 17 for pronout portion in the reflector', as .atl 15. The j Lviding `a stop, and also having a head 18 of j s y positioned on the exterior of the lamp casing. e j. Mounted onthe interior of the casing and against the inner surface of the rear thereof there lsan adjusting or focusing member such as the disk 19 which is keyed to the stud `2() extending through the.` rear yofthe 'casing at the center thereof and provided with the screw head 21. y f The stud 2O is surrounded by a compression spring 22A ypositionedy intermediate the plate 19 and a washer 23, and the screw bolt ,1,6 is likewise surrounded with a compression spring 24; mounted intermediate'the free end oit thebracketl and said disk 19. The rear ot the casing is provided Witha lon itudinal Vertical slot 25, through which sai screw "bolt isy adaptedv` to extend, and the rotatable vadjusting member or disk 19 is provided with ,a cam-like slot 26 through whichthe screw fbolt likewise extends.

'Iny operation, it is obvious that upon turning the screw 16, the lamp socket will be vcaused to y'slide back and forth horizontally and be heldin adjusted position by the spring 24, wherebyethe source ot' light contained in low the horizontal planer of the focal point ruponr the screw bolt being, raised,-and tilting (the source 'of light upwardly upon the screw".-

jbolt being lowered.

Whilethe adjustment of the screwebolt 16 through the medium of its head 18 has theetfect o'll focusing the ylight tor obtaining substantially parallel rays. onV the one hand, or either convergent or di yvergent rays on the other hand, the lrotation :of the stud 20jby means of its head 21 will loisk vpermit ot the socalled faiming? of the beam,

e., throwing it downwardlyor upwardly, asdesired.` It a perfect parabolic. reflector is employed, with the sourceyof illumination theoretically' at the focal point, it is well known that the rays ot' light projected thereby 'will be horizontal. Onthe other hand, if by means of thefocusing adj ustmentthrough the screw head 18, the source of illumination is moved forwardly ot the focal point, the rays of light projected by the reflector will be convergent, and it moved to the rear, willv be divergent. It, through the operation of thestud head 21, the source of light is moved slightly Lupwfardly, the principal direction of the 4main beam ot' light projected from the reliector, will bebelow the horizontal. Thus the beam ot'rlight projectedv from the lamp may be adjustedso as'to obtain the desired Vfocusingfetlect as wellas the desired aiming ofthe principal beam, as desired,eitlier above or below the horizontal.

As illustrated in Figs. 3 and4,`the same resultsr were robtained through Ya screw head set within a. narrow knob. As shown herein the Vsocket 112 is -provided with the bracket 114 havingl an offset end 115 extending through a suitable opening in the refiectorV *11p Intermediate the ends. ot' the bracket Lalsosecures the bracket 117 "to the'rear of the casing. The end of the stud'is Jformed in "octagonal shape as at 122,.,orpin a similar [af threaded screw bolt 126' having a screw :head 127,.said boltbeing adapted to screwv through the bracket 116 and havingr spread there is a reduced space adapted to be stradndied or embraced` by the biturcated end ot the upright bracketll, the upright bracket being connected at its opposite end, which is bent rearwardly to a fixed lsupport 117. The lower end Vof the support1117 is provided witha vertical slotfc118 in which the rear endfotthe-bracket 114L is slidably mounted.

yEzkztending through the rear of thecasing `vthere .is astud 119 having a knurled head 120, said Lstud being rotatably mounted therein `by Vthe bearingfmeinber 121, which manner is' keyed to a disk 123, which is caused toi'otate upon the knurled head 120 being turned.V Said disk isheld in position against 'they bracket 117 by a compression fspring 124,y and is provided-with a cam-*like 751015125 l Y'VEfxtending" through thev stud "1.19 thereis "endsv *for limiting the movement of said ,Vbracketin onedirection.

fr In operation, when it is Vdesired to move fthe'bulb 13 horizontally, the screw bolt 126 .is'turned through the medium of its head 127., so, as to causethe bracket 116 to move back or; forth 'and thereby causing the bracket 1111'to slide longitudinally, carrying 60 the lamp socket therewith. Upon itbeing .desired to. tilt the lamp in a vertical plane, Y the knob 120 is turned, which causes the disk Y 1231130 turn therewith so as to vary the ver- 'ticalpositi'on of thecam-like slot 125 with respect to thefslotf118` in the bracket 117. L

a lamp structure for focusing the bulb andv aiming the'beamI ot light, it may be employed in a like manner Jfor securing various adj ustments with respect to other structures.

The invention claimed is:

1.v The combination witlia lamp casing, and a. rreliecter mounted therein, ot a socket slidably mounted in said reflector for supporting a'source ot illumination, meansior adjusting the position oit said socket by slidably moving the same with respect to said retlector, a circular disc having a cani-like slot therein through which said adjusting means extends, and means tor pivotally mounting said discl onsaid casing and rotating the same for varying the position of saidiadjusting meansand cliecting a tilting movement tosaid socket independently of its sliding adjustn'ientf.

2. A headlight including, incombination, 'a reflector, a lamp socket 'extending through the rear end o-'the reliector and supported for rocking movement about a horizontal axis, means for preventing'rotation of the socket with respect to the reflector, a casing f having its back disposed at someY distance behindy the reflector and having this back :provided with avertical slot, sockettilting means including a portion iast on the socket 'and a second portion extendingV slidably through the said slot; and an adjusting ,member movably mounted on the said back lofthe casing andfhaving a cam slot crossing for' rocking ymovement about ya horizontal ranis,'inyeans for Vpreventing rotation ofthe lsocket with respect tothe reflector, Aa casing having its back disposed at some distance behind the reflector yand having ,this back provided Vwith a vertical slot, socket'tilting means including a portion fast on the socket c Vand. a second` portionY 'extending slidably through the said slot;l and anwadjustino i member rotatably mounted on the said bac and having a substantially involute slot extending y*across the` said vertical y'slot and `engaging upper and lower edges of thesaid second portionV ot the socket tilting means. n 14. 1n a lamp, a reflector, a ylamp socket mounted for vertical tiltinggmovemen't with respectto the reflector, a tiltetlecting'member extendingjrearwardly from:the socket and having itsy axis parallel to that ofthe slot and through which the tilt-effecting member also extends,y and spring means interposed between the tilt-effecting member 'and the adjusting member for preventing accidental rotation of the latter. n

5. In a lamp, a forwardly open reflector having a perforation in its rear end, a lamp socket extending through the perforation ,y

and supported ,for vertical rocking movement, and socket-tiltingmeans comprising a tilting member connected'to and extendingy rearwardly axially of the socketya lamp casing housing the reflectorkand having a back provided with a vertical slot through which the tilting member extends; an kadjusting member rotatably mounted within the casing back'on an axiscwhich extends longitudinally of the reflector and which is substantially in the same medial plane with the vertical center line of the said slot; the adjusting member having a portion disposed close to the casing back and provided with ka helical slot through ,which thetilting member also extends; yand means operable from the rear of the casing for moving the adjusting member so as to vary the part of the' helical slot through whichfthe tilting mem` ber extends.

6. In a lamp, a yforwardly open reflector having a perforation in its rear end, a lamp socket extending through the perforation and supported for vertical rocking .'movement, and socket-tilting means .comprising a tilting member connected to' and extendingr rearwardly axially of the socket,y a lamp casi ing housing the reflector and having a back provided with a vertical 'slot through which the tilting member extends; an adjusting member rotatably mounted within the cas-y ing back on an axis which extends longitudi-k nally of the reflector and which is substantially in the same medial plane with the vertical center line of the said slot; the adjust-k ing member having a portion bearing against the inner face of the casing back and having the said portion provided with a helical slot through which the tilting member also extends;y and means operable from the rear of the casingl for moving the adjusting member so as to vary the part of the helical slot through ywhich the tilting member extends,

thefsaid means comprising a bolt rotatably mounted on the back of the casing and fast i with respect to the adjustingmember.

7. In a focusing lamp,` a reflector, a lamp socketfmounted for rockingmovement with respect to the reflector, a easing including a back provided with a vertical slot and with a perforation spaced.'from the slot; a bolt ro#` f tatable in the said perforation and having a f shankportion of non-circular section adjacent to the forward face of the said back; an adjusting member having a portion fitting vthe said non-circularly sectioned shank portion and having another kportion bearing against thecforward face of the said back, the last named portion having a cam slot extending transverse of the said vertical slot,

part extending through both of the said and socket tilting means including a part j supported by the socket and extending rear- In witness whereof, I have hereunto affixed my signature.

i SAMUELW. HYATT. 

